Heavenly Berry Muffins!!

I think must've died and gone to berry paradise. Seriously, if you're a fan of berries and/or muffins - these are hands down the best I've EVER made! Not to "root-eh-toot-toot" my lil' horn... but these are too delish to pass up.

Ingredients
12 tablespoons (1 1/2 sticks) unsalted butter, at room temperature
1 1/2 cups sugar
3 extra-large eggs, at room temperature
1 1/2 teaspoons pure vanilla extract
1 cup sour cream
1/4 cup milk
2 1/2 cups all-purpose flour
2 teaspoons baking powder
1/2 teaspoon baking soda
1/2 teaspoon kosher salt
1 half-pint fresh blueberries (do not wash... i know sick... but choose organic)
1 half-pint fresh raspberries sliced in half (substitute 2 half-pints if you want to leave out the raspberries)

Directions
Preheat the oven to 350 degrees F. Place 16 paper liners in muffin pans. Spray the top of the pan with "non stick" cooking spray as the muffins will overflow (don't worry, they're supposed to).

In the bowl of an electric mixer fitted with the paddle attachment, cream the butter and sugar until light and fluffy, about 5 minutes. With the mixer on low speed, add the eggs 1 at a time, then add the vanilla, sour cream, and milk. In a separate bowl, sift together the flour, baking powder, baking soda, and salt. With the mixer on low speed add the flour mixture to the batter and beat until just mixed. Fold in the blueberries and raspberries with a spatula and be sure the batter is completely mixed.

Scoop the batter into the prepared muffin pans, filling each cup just over the top, and bake for 25 to 30 minutes, until the muffins are lightly browned on top and a cake tester comes out clean.